# valid probability distribution quiz, statistics homework help

Probability is ____. (Points : 2)  the likelihood that some event will occur

always expressed as a value between 0 and 1

is the ratio of the number of favorable cases to the total number of possible cases

all of the above

Question 2.2. The sum of the probability that an event will occur and the probability that it will not occur is ____. (Points : 2)  different for each case

equal to P(E)

equal to P(E)-1

equal to 1

Question 3.3. The probability that an event will occur is written as follows (Points : 2)  P=1

P(E)

P(E-1)

P(not E)

Question 4.4. Probability values are (Points : 2)  always more than 1.0

always positive numbers

only calculated for one-tailed tests

always expressed as a fraction

Question 5.5. What proportion of a normal distribution is located in the tale beyond a Z score of +1.00? (Points : 2)  0.8413

0.1587

0.168

0.3174

Question 6.6. A random sample requires that (Points : 2)  every individual has an equal chance of being selected

individuals are selected from a convenience group

no one knows how many people are in the population

both a and b are correct

Question 7.7. For a population with a mean of 80 and a standard deviation of 10, what is the Z score corresponding to an individual score of 95? (Points : 2)  +0.25

+0.50

+0.75

+1.50

Question 8.8. If the researcher’s alternative hypothesis stated, “females in this test will score higher than males” ____. (Points : 2)  this would be a two-tailed test

it would be too early to make that statement

this would be a null hypothesis

this would be a one-tailed test

Question 9.9. If the null hypothesis stated that Group A results would be the same as Group B, would this represent a one-tailed or two-tailed test? (Points : 2)  One-tailed

Two-tailed

it could be either one depending on the groups

Question 10.10. For a population with a mean of 80 and a standard deviation of 12, what is the Z score corresponding to an individual score of 92? (Points : 2)  +0.50

+1.0

+1.20

+12.00

## Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
\$26
The price is based on these factors:
Number of pages
Urgency
Basic features
• Free title page and bibliography
• Unlimited revisions
• Plagiarism-free guarantee
• Money-back guarantee
On-demand options
• Writer’s samples
• Part-by-part delivery
• Overnight delivery
• Copies of used sources
Paper format
• 275 words per page
• 12 pt Arial/Times New Roman
• Double line spacing
• Any citation style (APA, MLA, Chicago/Turabian, Harvard)

# Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

### Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

### Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

### Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.